GHSA-g7h8-p22m-2rvx: Flat wrap Prototype Pollution Vulnerability

HIGH
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CWE-1321
Published
Advisory Summary

GHSA-g7h8-p22m-2rvx is a HIGH prototype pollution vulnerability (CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')) affecting Flat wrap libraries in the npm ecosystem. The issue involves prototype pollution in flat-wrap. Remediation is available in the latest vendor maintenance releases.

GHSA-g7h8-p22m-2rvx at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-g7h8-p22m-2rvx
Severity HIGH
CVSS v3.1 Base Score N/A
CWE Classification CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Affected Product Flat wrap
Package Ecosystem npm
Published Date
Last Updated

How to Fix GHSA-g7h8-p22m-2rvx

To remediate this vulnerability, upgrade all affected Flat wrap dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

flat-wrap fixed: Latest secure release 
npm install flat-wrap@Latest secure release
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

npm ls flat-wrap

How to Check if You Are Affected

To determine whether your Node.js application is affected by GHSA-g7h8-p22m-2rvx, inspect your project dependencies using npm:

npm ls flat-wrap

Analyze the terminal output to locate any version of Flat wrap in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The npm ls flat-wrap command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution'), where the product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype. In Flat wrap, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

All versions of `flat-wrap` are vulnerable to prototype pollution. The function `unflatten` does not restrict the modification of an Object's prototype, which may allow an attacker to add or modify an existing property that will exist on all objects. ## Recommendation No fix is currently available. Consider using an alternative package until a fix is made available.

GHSA-g7h8-p22m-2rvx Affected Flat wrap Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
flat-wrap
npm/flat-wrap
npm
≥ 0.0.0

References

www.npmjs.com/advisories/1327 WEB
https://www.npmjs.com/advisories/1327

Frequently Asked Questions

What is GHSA-g7h8-p22m-2rvx?
GHSA-g7h8-p22m-2rvx is a security vulnerability in Flat wrap involving Prototype Pollution in flat-wrap under CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution').
Which Flat wrap versions are affected?
Affected versions include releases prior to current release patches across affected packages: flat-wrap.
What version fixes GHSA-g7h8-p22m-2rvx?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is flat-wrap affected?
Yes, flat-wrap is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What CWE is associated with GHSA-g7h8-p22m-2rvx?
GHSA-g7h8-p22m-2rvx is classified under CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') (The product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype.).
How can I check npm dependencies for GHSA-g7h8-p22m-2rvx?
Run the dependency tree command: 'npm ls flat-wrap'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-g7h8-p22m-2rvx",
  "modified" : "2020-08-31T18:55:16Z",
  "published" : "2020-09-04T15:08:46Z",
  "aliases" : [ ],
  "summary" : "Prototype Pollution in flat-wrap",
  "details" : "All versions of `flat-wrap` are vulnerable to prototype pollution. The function `unflatten` does not restrict the modification of an Object's prototype, which may allow an attacker to add or modify an existing property that will exist on all objects.\n\n\n\n\n## Recommendation\n\nNo fix is currently available. Consider using an alternative package until a fix is made available.",
  "severity" : [ ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "flat-wrap"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.0.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://www.npmjs.com/advisories/1327"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-1321" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-08-31T18:55:16Z",
    "nvd_published_at" : null
  }
}